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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?

To: TigerPaw who wrote (20649)	2/29/2008 10:56:47 AM
From: Hawkmoon	Read Replies (1) \| Respond to of 36921

With more food available, the bacteria increase in number and use up the dissolved oxygen in the water. When the dissolved oxygen content decreases, many fish and aquatic insects cannot survive. This results in a dead area. Yep.. but let's not forget that the paleo-geologic/climatic record reveals that there have been naturally occurring periods when vast portions of the oceans have been anoxic. In fact, it was exactly this anoxia over millions of years during the Triassic that resulted in the huge hydro-carbon deposits of the Middle East. Look up Tethys seaway and hydrocarbon formation: Here's one link that might be of interest: geocomplexity.com Bottom line, to an extent, portions of the ocean becoming anoxi might be a major contributor to ensuring that large quanties of CO2 are absorbed and deposited on the ocean floors, where they are converted to hydro-carbon deposits. Hawk